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页码 632
190-00498-07  Rev. A
Garmin G1000 Pilot’s Guide for Cessna Nav III
SY
STEM
O
VER
VIEW
FLIGHT
INSTRUMENTS
EIS
AUDIO P
ANEL
& CNS
FLIGHT
MANA
GEMENT
HAZARD
AV
OID
ANCE
AFCS
ADDITIONAL FEA
TURES
APPENDICES
INDEX
578
APPENDIX A
AFCS ALERTS
Figure A-6  AFCS System Status Field
System Status Field
The following alert annunciations appear in the AFCS System Status field on the PFD.
Condition
Annunciation  Description
Pitch Failure
Pitch axis control failure.  AP is inoperative.
Roll Failure
Roll axis control failure.  AP is inoperative.
MET Switch Stuck, or 
Pitch Trim Axis Control 
Failure
If annunciated when AP is engaged, take control of the aircraft and disengage the autopilot.  
If annunciated when AP is not engaged, move each half of the MET switch separately to 
check if a stuck switch is causing the annunciation.
System Failure
AP and MET are unavailable.  FD may still be available.
Elevator Mistrim Up
A condition has developed causing the pitch servo to provide a sustained force.  Be prepared 
to apply nose up control wheel force upon autopilot disconnect.
Elevator Mistrim 
Down
A condition has developed causing the pitch servo to provide a sustained force.  Be prepared 
to apply nose down control wheel force upon autopilot disconnect.
Aileron Mistrim Left
A condition has developed causing the roll servo to provide a sustained left force.  Ensure 
the slip/skid indicator is centered and observe any maximum fuel imbalance limits.
Aileron Mistrim Right
A condition has developed causing the roll servo to provide a sustained right force.  Ensure 
the slip/skid indicator is centered and observe any maximum fuel imbalance limits.
Preflight Test
Performing preflight system test.  Upon completion of the test, the aural alert is heard.
Preflight system test has failed.
 NOTE: 
Do not press the AP DISC switch during servo power-up and preflight system tests as this may cause 
the preflight system test to fail or never to start (if servos fail their power-up tests).  Power must be cycled 
to the servos to remedy the situation.